偶园，位于山东省青州市，是清初大学士冯溥建于清康熙八至九年（1669－1670）的一座城市宅园。此园营建自明代衡王府奇松园和冯溥旧园的基础上，经冯家世守近三百年，1949年收归国有。目前偶园内部分遗存保存较好，是现存重要的北方私家园林遗产。文章通过偶园，展开对中国古代文人园林个案研究的探索。综合运用风景园林学、建筑学、考古学和历史学等多学科的理论方法，对偶园展开全面、系统的学术研究。通过“外部研究”和“内部研究”两条线索展开：外部方面，考察偶园的创作者（园主）、历史变迁和相关社会文化背景。密切结合园主人的生平事迹和人物思想，将对偶园的考察置于宏观的社会图景和历史脉络中。由物证史，进而见人，形成对偶园的历史、文化内涵的全面认知。内部方面，通过三维激光扫描和航拍建模等手段，对偶园遗产本体作精细化测绘，绘制详细的遗产图录。在此基础上，结合史料文献，展开对偶园历史景象的复原研究，重现清初园林景象。总体而言，本研究旨在以偶园为例，建立起多学科背景下的中国古代文人园林个案研究体系，加深对中国古代园林的认识，进而助益于当下的园林遗产保护和景观设计实践。

Ouyuan, a private garden in Qingzhou, was built between 1669 to 1670 by the Grand Secretary Feng Pu. Ouyuan was built on the basis of the Heng Palace’s Qisong Garden and Feng Pu’s old garden. With a profound history and a serene scene, it became a precious relic of the traditional literati gardens in northern China. After the orderly inheritance of Feng Pu descendants, the garden was nationalized after the founding of the People's Republic and became a cultural relic protection unit.Through the study of the Ouyuan, the author actually aims to explore the study of ancient Chinese literati gardens. By using the methods of architectural history, art history and literature history, this thesis makes a systematic study of this garden for the first time. There are two clues in this thesis: "external research" and "internal research”. For external aspects, This thesis studied the creator of the garden, historical changes, and related social and cultural background. For Internal aspects, This thesis made a thorough on-site survey with the technique of laser mapping. The aim is to record its heritage information in detail. Lastly, combined with historical documents, this thesis carries out the imagination restoration of the historical scene of Ouyuan.